CN202938075U

CN202938075U - Light-emitting diode (LED) lamp

Info

Publication number: CN202938075U
Application number: CN2012205233589U
Authority: CN
Inventors: 薛锡荣
Original assignee: KANGRONG FINE CERAMICS CO Ltd FOSHAN CITY
Current assignee: Guangdong hi tech hi tech new material Limited by Share Ltd
Priority date: 2012-10-12
Filing date: 2012-10-12
Publication date: 2013-05-15
Anticipated expiration: 2022-10-12

Abstract

The utility model relates to a light-emitting diode (LED) lamp which comprises an LED light-emitting component, an LED substrate and a casing. The bottom face of the casing is fixedly connected with an LED substrate plane in attaching mode, a semi-closed cavity is arranged in the casing, an opening of the cavity is arranged on the bottom face of the casing, radiating liquid is arranged in the cavity and poured on the LED substrate, and the radiating liquid and the LED substrate are completely contacted in sealing mode, heat on the LED substrate can be transferred to the radiating liquid to the largest extent, an effect of cooling the substrate fast and efficiently is obtained, and the service life of the whole LED lamp is prolonged.

Description

A kind of LED lamp

Technical field

The utility model relates to a kind of LED class illuminator.

Background technology

The LED lamp is a kind of illuminating product of making light-emitting component with the LED light emitting diode.Along with reaching its maturity of LED production technology, greatly improve the service life of LED, and as a kind of new light sources material, compared to conventional light source, LED has low power consumption and other advantages, in the today of advocating green energy conservation, does the universal utilization fast of light fixture of light source with LED.Produce the substrate temperature rising that heat causes LED itself and is attached thereto when luminous due to LED, lasting rising along with temperature, to greatly reduce the service life of LED, and affect simultaneously the normal operation of peripheral other electron component, for making normally continuous firing of LED, how fast and effeciently heat radiation becomes LED light fixture problem needing to overcome to LED, when particularly making high power LED lamp, heat dissipation problem is more aobvious outstanding, be urgent problem, directly affect the life-span of LED lamp and the design power of restriction LED light fixture.in the market, the radiating mode of LED light fixture is the heat dissipation element that is accompanied with for the light-emitting component heat radiation basically, this heat sinking function element is with metal, plastics, pottery and synthesis solid consist of, it and light-emitting substrate are fixed together, heat on substrate is conducted on this heat dissipation element, further be transmitted to again the external world, thereby with spread heat, the suffered heat of substrate unit area is reduced, stop the lasting rising of substrate and LED temperature, but all in all, this radiating mode is because applying degree between heat dissipation element and substrate is relatively poor, have influence on heat conducting efficient, and along with the LED continuous firing, the continuous accumulation of heat, can't fast heat be conducted again as heat dissipation element, himself temperature of the heat put aside of heat dissipation element itself raises so, can't play well the effect of heat radiation, if heat dissipation element is done greatly simply, increase the area of dissipation of heat dissipation element, can make again cost high.The technical scheme that also has the mode of the liquid heat-exchange taked to dispel the heat, for example, a kind of patented technology that Chinese patent literature CN201983127U discloses, take by two heat absorption tanks and be connected to two heat pipe modes between the heat absorption tank to dispel the heat, getting along alone in tank in heat absorption is packaged with heat absorption liquid, heat pipe be fixed on housing on the heat absorption tank between be connected with flexible body.Mode by the heat transmission is delivered to the outside to this radiating mode with the heat on substrate in lamp, though solved because of the large aesthetic property problem that affects lamp of heat dissipation element volume on housing, but because the heat absorption tank is placed in outside housing, affected the associative perception of lamp, also fail to reduce the overall volume of lamp, also increased cost.

The utility model content

the purpose of this utility model is to provide a kind of LED lamp that adopts liquid radiating to combine with the solid heat radiation, this scheme not only can be at the overall volume that does not increase whole lamp, improve whole lamp power, while physical dimension compactness and the low advantage of cost, the utility model is achieved in that a kind of LED lamp, comprise the LED light-emitting component, LED substrate and use shell, fit with the LED base plan and be fixedly connected with in the bottom surface of described shell, it is characterized in that: be provided with in described shell and be the chamber that partly is sealed shape, the opening of described chamber is located on the bottom surface of shell, described chamber indoor set radiator liquid.

Further scheme is that the open outer side along chamber between shell and LED substrate contacts face is provided with sealing ring.Seal between LED substrate sideshake and radiator liquid, radiator liquid is fixed in chamber.

Further scheme is, described shell and or the LED substrate be provided with seal groove, described sealing ring is placed in described seal groove.When shell was fixedly connected with the LED substrate, described sealing ring propped up respectively shell and LED substrate, thereby realized the effect of sealing.

Further scheme is still to be provided with the space after the indoor set radiator liquid of described chamber.Be that volume under described radiator liquid normal temperature is less than the volume of chamber, so, for radiator liquid self leaves the space owing to being heated the volume increase that causes after heat expansion because of conduction during heat, prevent that radiator liquid is because of expanded by heating, support bad shell or substrate and cause distortion, thereby affect both applying degree, and then impact heat conduction.

Further scheme is that described radiator liquid is made of water.

Further scheme is that described shell is made of aluminium or pottery.

Further scheme is that a side of described LED substrate and housing contacts is made of aluminium or pottery.For example, the LED substrate mount the one side of LED element can be after carrying out insulating materials on aluminium sheet copper facing paper tinsel again, thereby the insulation between electronics unit body belongs to the line aluminium sheet with a side of housing contacts, realized not only heat conduction but also the purpose that insulate.

Pass through such scheme, when lamp works, the cooling fluid physical efficiency is toppled on the LED substrate, driving fit contact fully between the two, can with the heat on the LED substrate to greatest extent underground heat be delivered in radiator liquid, the modes such as convection current, conduction of being undertaken by radiator liquid are again passed to shell, be delivered to nature via shell in modes such as radiation again, reach substrate cooling effect quickly and efficiently, the substrate temperature that finally reaches carrying LED element descends, the temperature of LED light-emitting component descends thereupon simultaneously, the whole lamp life-span rising of LED that LED light-emitting component temperature descends and brings.

The utility model has the advantages that: simple in structure, volume is little, and is easily manufactured, good heat dissipation effect, and can be extended the service life of LED, and cost is low, and cost performance is high.

Description of drawings

Fig. 1 is broken section structural representation of the present utility model; Wherein, 1 is the LED substrate, and 2 is shell, and 3 is sealing ring, and 4 is radiator liquid, and 5 is chamber.

The specific embodiment

Below in conjunction with accompanying drawing, further illustrate the specific embodiment of the present utility model.

Embodiment:

As shown in Figure 1, chamber 5 is annular around lamp holder, leaves the space between radiator liquid 4 tops and chamber 5, and chamber 5 opening both sides are all around sealing ring 3, and the LED substrate 1 ceramic light source module assembly of serving as reasons comprises emitting components encapsulation diode or COB etc.The side that LED base 1 plate contacts with shell 2 is made of pottery, by LED substrate 1 and sealing ring 3, the radiator liquid 4 in chamber 5 is sealed in chamber 5, when the LED galvanization emits light and heat, heat passes to radiator liquid 4 by LED substrate 1, be heated rear density of radiator liquid 4 reduces, so to rising, and cold liquid replenishes downwards, forms convective heat exchange.And the liquid of heat is when rising, and the thermal power transfer that LED is produced is the kinetic energy of liquid, and transfers heat to shell, thereby reaches the effect of heat radiation.

Below by comparative tests, the radiating effect of the utility model light fixture is described.

Experimental facilities: existing lamp on the market of the lamp of employing the utility model example structure and employing aluminum radiating piece, two lamps all respectively are provided with the LED lamp pearl of 1 A60, power 9W.

Experimental technique: the thermocouple wire temp probe is placed on respectively the lamp bead weld point place of LED substrate 1, recording lamp is lighted the temperature after 2 hours, 4 hours respectively.

Contrast effect sees Table 1:

Can find out by above-mentioned contrast, adopt the LED lamp of the utility model example structure, the lamp bead weld point place temperature of LED substrate 1 is less than the existing lamp with power, therefore can illustrate, use the radiator structure of the utility model embodiment, temperature in the time of can significantly reducing by 1 work of LED substrate improves the power under unit volume, extends the life-span of LED.

Need to prove: embodiment explains to of the present utility model, is not as limit, and any equivalent transformation that meets the technical solutions of the utility model substantial principle all should be within this novel protection domain.

Claims

1. LED lamp, comprise LED light-emitting component, LED substrate and shell, fit with the LED base plan and be fixedly connected with in the bottom surface of described shell, it is characterized in that: be provided with in described shell and be the chamber that partly is sealed shape, the opening of described chamber is located on the bottom surface of shell, described chamber indoor set radiator liquid.

2. LED lamp according to claim 1 is characterized in that: described between shell and LED substrate contacts face the open outer side along described chamber be provided with sealing ring.

3. LED lamp according to claim 2 is characterized in that: described shell and or the LED substrate be provided with seal groove, described sealing ring is placed in described seal groove.

4. according to claim 1 or 3 described LED lamps, is characterized in that: still be provided with the space after the indoor set radiator liquid of described chamber.

5. according to claim 1 or 3 described LED lamps, it is characterized in that: described radiator liquid is made of water.

6. LED lamp according to claim 1, it is characterized in that: described shell is made of aluminium or pottery.

7. LED lamp according to claim 1, it is characterized in that: a side of described LED substrate and housing contacts is made of aluminium or pottery.